Microwave study of the submillimeter spectrum of the H2O⋯HF dimer

The study of the rotational spectrum of the H2O⋯HF dimer in the equilibrium gas phase in the range 180-350 GHz by continuously frequency scanning microwave spectrometer with backward-wave oscillator and acoustic detection of absorption is described. The results of analyzing of the most intense spectral series are given. The assignment of some spectral series observed earlier is corrected. Data on the Coriolis interaction between the ground and excited vibrational states are obtained and spectroscopic constants of the dimer are significantly refined.